SuiteSuccess Posted March 26, 2020 Report Share Posted March 26, 2020 (edited) For all you smart recluses sitting around, how about some mental gymnastics? The Covid-19 virus is approximately 0.125 microns in size. HEPA filters are very effective at capturing particles down to 0.01 microns. Can an effective filter/mask combo be made at home that would be protective for any forays into public that are absolutely necessary? Assume N95 respirator masks are not available for purchase. Problems to consider: 1. O2 ingress, CO2 egress. 2. Tight fit. 3. Ease of breathing. If you’re heaving to get a breath, isn’t going to be much good. HEPA filters are fairly ubiquitous for vacuums and air purifiers. Might require a small battery driven air pump to create positive pressure. Aquarium pump? Edited March 26, 2020 by SuiteSuccess Quote 2006 Volvo 780 "Hoss" Volvo D12, 465hp, 1650 ft/lbs tq., ultrashift Bed Build by "JW Morgan's Custom Welding" 2017 DRV 39DBRS3 2013 Smart Passion Coupe "Itty Bitty" "Don't go around saying the world owes you a living. The world owes you nothing. It was here first!" Link to comment Share on other sites More sharing options...
geodog Posted March 26, 2020 Report Share Posted March 26, 2020 Remain a HERMIT, this too will pass. ShortyO Quote Link to comment Share on other sites More sharing options...
SuiteSuccess Posted March 26, 2020 Author Report Share Posted March 26, 2020 1 hour ago, geodog said: Remain a HERMIT, this too will pass. ShortyO We are Shorty. Just trying some mind games to keep my brain active. Thought others might enjoy some homemade fun. My dad was a master of homemade. Give him some duct tape and rope and he could build you a Mercedes. Quote 2006 Volvo 780 "Hoss" Volvo D12, 465hp, 1650 ft/lbs tq., ultrashift Bed Build by "JW Morgan's Custom Welding" 2017 DRV 39DBRS3 2013 Smart Passion Coupe "Itty Bitty" "Don't go around saying the world owes you a living. The world owes you nothing. It was here first!" Link to comment Share on other sites More sharing options...
rickeieio Posted March 26, 2020 Report Share Posted March 26, 2020 1 hour ago, SuiteSuccess said: Give him some duct tape and rope and he could build you a Mercedes. Problem is, back in the mid '90s, Mercedes found out about your dad, and stole his idea. We had a '95 MB pos. But back to the filter.....You mention a pump and such. What are you trying to do? Filter air coming into the home? If so, just use a shop-vac with the appropriate filter and a hose on the discharge side. Dump out the cat hair and dry wall dust first. Quote KW T-680, POPEMOBILE Newmar X-Aire, VATICAN Lots of old motorcycles, Moto Guzzi Griso and Spyder F3 currently in the front row Young enough to play in the dirt as a retired farmer. contact me at rickeieio1@comcast.net Link to comment Share on other sites More sharing options...
SuiteSuccess Posted March 26, 2020 Author Report Share Posted March 26, 2020 5 minutes ago, rickeieio said: Problem is, back in the mid '90s, Mercedes found out about your dad, and stole his idea. We had a '95 MB pos. But back to the filter.....You mention a pump and such. What are you trying to do? Filter air coming into the home? If so, just use a shop-vac with the appropriate filter and a hose on the discharge side. Dump out the cat hair and dry wall dust first. Rick, I’m not trying to do anything. Since I was tired of Andy Griffith reruns, my idle mind wanders and I come up with some “what if’s “. Was just thinking what if I wanted to develop my own Covid protective device using stuff I might have at home, how would I do that? The project is something portable you could wear if needed to the supermarket or some other place if it is the worst case scenario and you assume rampant infection and infected surroundings. So not reinventing a better wheel just keeping occupied. Thought others might like a mental challenge. Sometimes fun to tax your creativity. Quote 2006 Volvo 780 "Hoss" Volvo D12, 465hp, 1650 ft/lbs tq., ultrashift Bed Build by "JW Morgan's Custom Welding" 2017 DRV 39DBRS3 2013 Smart Passion Coupe "Itty Bitty" "Don't go around saying the world owes you a living. The world owes you nothing. It was here first!" Link to comment Share on other sites More sharing options...
geodog Posted March 26, 2020 Report Share Posted March 26, 2020 I worked for 30+ years in an industry that depended upon Duct Tape and Cap wire or pin flags to survive. Cap wire was the wire from the blaster to the detonation cap for dynamite while pin flags were the wire flags you see on surveyed lines. ShortyO Quote Link to comment Share on other sites More sharing options...
hone eagle Posted March 26, 2020 Report Share Posted March 26, 2020 I thought the virus is not airborne ? So breathing it in is unlikely ? touching your face, fiddling with a aquarium air pump (have you listened to one ) plus the cord will limit your travel distance........... wish I could photoshop , what a hoot can anybody mount a fuel filter on a baseball cap? Quote 2005 volvo 670 freedomline singledNewmar Torrey Pine 34rskswoot woot Link to comment Share on other sites More sharing options...
rickeieio Posted March 26, 2020 Report Share Posted March 26, 2020 Swap out the filter for a hepa-1 and convert to run on a 12v battery. https://www.pegasusautoracing.com/productdetails.asp?RecId=5749&utm_source=google&utm_medium=cpc&utm_campaign=CS209&gclid=Cj0KCQjwpfHzBRCiARIsAHHzyZqh-uUrOGdWxzsP8LcSu0opPkDewTD7dA7BDd19zTf92ZoqpHPtCHgaAqEYEALw_wcB That was too easy. NEXT..............😋 Quote KW T-680, POPEMOBILE Newmar X-Aire, VATICAN Lots of old motorcycles, Moto Guzzi Griso and Spyder F3 currently in the front row Young enough to play in the dirt as a retired farmer. contact me at rickeieio1@comcast.net Link to comment Share on other sites More sharing options...
SuiteSuccess Posted March 26, 2020 Author Report Share Posted March 26, 2020 (edited) 18 minutes ago, rickeieio said: Swap out the filter for a hepa-1 and convert to run on a 12v battery. https://www.pegasusautoracing.com/productdetails.asp?RecId=5749&utm_source=google&utm_medium=cpc&utm_campaign=CS209&gclid=Cj0KCQjwpfHzBRCiARIsAHHzyZqh-uUrOGdWxzsP8LcSu0opPkDewTD7dA7BDd19zTf92ZoqpHPtCHgaAqEYEALw_wcB That was too easy. NEXT..............😋 Now you’re thinking Rick😊...BUT you’ve got to play the game. Homemade (McGiver) not totally ready made. That takes all the fun out of it. BTW are you one of those who tells everyone in the theater how the movie ends? (Just kidding with you my friend, I know how creative you are). BTW old motorcycle helmet some hose, computer pancake fan....hmmm. Edited March 26, 2020 by SuiteSuccess Quote 2006 Volvo 780 "Hoss" Volvo D12, 465hp, 1650 ft/lbs tq., ultrashift Bed Build by "JW Morgan's Custom Welding" 2017 DRV 39DBRS3 2013 Smart Passion Coupe "Itty Bitty" "Don't go around saying the world owes you a living. The world owes you nothing. It was here first!" Link to comment Share on other sites More sharing options...
rdickinson Posted March 26, 2020 Report Share Posted March 26, 2020 I do FA and safety in a number of areas so get to see other options. In the shipyards we use a half mask with circular twist on filters, the filters are replaceable and the mask gets wiped out with BZK wipes. These particular masks will filter out welding smoke. I've had to stand by on fire watch and hole watch. I've asked for specifics but not heard back yet. You need to be clean shaven in order to get a fit test with them. The N 95's are supposed to be disposable but can last longer if stored properly. I used a margarine container and labeled it....most don't. A slightly better mask is the 'Fair Air' fire mask from Australia. Spendy, but I bought 2, one for me and the other for my brother who works in a hospital where there has already been one worker who has contracted the virus. This mask is re-usable and washable, also comes with an xtra filter. It takes out slightly more of the .3 micron particles....98.6% and 100% of the bigger particles. So I'm covered. We get them from a Logging firm up Island. $80 each or close to it. I shop for groceries b/w 7 and 8 am when the shelves have been freshly stocked including TP. Seniors and handicapped people only at that time. Having looked at the products involved I don't see the reason why it can't be reverse engineered. There isn't a patent on it yet. Could the same not be done with these ventilators?? Are there off the shelf parts that could be cobbled together to accomplish the same result.....Or in FA terms, 'was the objective met'. It may be ugly and unorthodox and not a streamlined and pretty as the current ones in use. If a camera could be put in the nose of a Maverick missile and fed back to the A10 in the first Desert Storm, there should be enough creative minds and skilled hands to pull this off. Quote Link to comment Share on other sites More sharing options...
rickeieio Posted March 27, 2020 Report Share Posted March 27, 2020 Hmmm, so, Carl, are you implying we need to use items on hand? No shopping or outside sourcing? Have you seen my shop? Quote KW T-680, POPEMOBILE Newmar X-Aire, VATICAN Lots of old motorcycles, Moto Guzzi Griso and Spyder F3 currently in the front row Young enough to play in the dirt as a retired farmer. contact me at rickeieio1@comcast.net Link to comment Share on other sites More sharing options...
SuiteSuccess Posted March 27, 2020 Author Report Share Posted March 27, 2020 1 minute ago, rickeieio said: Hmmm, so, Carl, are you implying we need to use items on hand? No shopping or outside sourcing? Have you seen my shop? No outside sourcing is okay in this project (don’t want to say game, cause who knows with the intellects around here, we may come up with something useful and cheap that could be mass produced). Just the outsourcing is parts only, not a completely finished product. Quote 2006 Volvo 780 "Hoss" Volvo D12, 465hp, 1650 ft/lbs tq., ultrashift Bed Build by "JW Morgan's Custom Welding" 2017 DRV 39DBRS3 2013 Smart Passion Coupe "Itty Bitty" "Don't go around saying the world owes you a living. The world owes you nothing. It was here first!" Link to comment Share on other sites More sharing options...
SuiteSuccess Posted March 27, 2020 Author Report Share Posted March 27, 2020 26 minutes ago, rdickinson said: I do FA and safety in a number of areas so get to see other options. In the shipyards we use a half mask with circular twist on filters, the filters are replaceable and the mask gets wiped out with BZK wipes. These particular masks will filter out welding smoke. I've had to stand by on fire watch and hole watch. I've asked for specifics but not heard back yet. You need to be clean shaven in order to get a fit test with them. The N 95's are supposed to be disposable but can last longer if stored properly. I used a margarine container and labeled it....most don't. A slightly better mask is the 'Fair Air' fire mask from Australia. Spendy, but I bought 2, one for me and the other for my brother who works in a hospital where there has already been one worker who has contracted the virus. This mask is re-usable and washable, also comes with an xtra filter. It takes out slightly more of the .3 micron particles....98.6% and 100% of the bigger particles. So I'm covered. We get them from a Logging firm up Island. $80 each or close to it. I shop for groceries b/w 7 and 8 am when the shelves have been freshly stocked including TP. Seniors and handicapped people only at that time. Having looked at the products involved I don't see the reason why it can't be reverse engineered. There isn't a patent on it yet. Could the same not be done with these ventilators?? Are there off the shelf parts that could be cobbled together to accomplish the same result.....Or in FA terms, 'was the objective met'. It may be ugly and unorthodox and not a streamlined and pretty as the current ones in use. If a camera could be put in the nose of a Maverick missile and fed back to the A10 in the first Desert Storm, there should be enough creative minds and skilled hands to pull this off. Could you post a picture? The problem with what you describe is the filter. Covid-19 is 0.125 micron and a 3 micron filter is not going to be helpful. One of my original thoughts was taking the paper out of a 5 micron oil filter and sewing in between layers of cloth until I found the size of the virus. Trouble is the smaller the pore size of the filter, the harder it would be to pull air through it with a breath and the harder to expel CO2 through it. That got me to thinking about a positive pressure air source to push air through the filter. Also the cure shouldn’t be worse than the disease so oil filter paper may be chemically laced which could cause harm. Air purifier HEPA filters should be safe to incorporate. Also the positive pressure would tend to push viral particles away from the edge of the mask enhancing safety. As a retired medical professional, I often times wore an N95 mask for hours on end when HIV/AIDs first hit and we had no clue of it’s transmission. It is exhausting just trying to breath through one of those for hours. Quote 2006 Volvo 780 "Hoss" Volvo D12, 465hp, 1650 ft/lbs tq., ultrashift Bed Build by "JW Morgan's Custom Welding" 2017 DRV 39DBRS3 2013 Smart Passion Coupe "Itty Bitty" "Don't go around saying the world owes you a living. The world owes you nothing. It was here first!" Link to comment Share on other sites More sharing options...
rdickinson Posted March 27, 2020 Report Share Posted March 27, 2020 I will pop it out of the Ziploc bac and post pics from different angles. These masks are worn for hrs at a time. The filter taken out, washed and a second one put in till the first one dries. The filter material is Alpaca hair. Evidently it doesn't 'scale' as some other products would. Wool balls up. Marino wool along with cotton are the fabrics of choice for WLFFing. These worn under the Nomex outers. No manmade fibes like polyprop, a hydrophobic material. We're told these can melt and stick to the skin....My own thoughts are if your clothes are melting you may have more serious things to worry about. Having said all that, from what I see some of the problems with the N 95 are they are not worn properly. The metal band over the bridge of the nose is not being pushed in to conform to the face. Doesn't matter if you wear a surgical mask over. The N 95 still isn't in contact with the face. I'd like to find out what are the properties this mask has that others don't....try to find a like product. What's so special about Alpaca hair??? What about LLama or the next doors standard poodle. Most of the mask looks like standard football jersey material with the holes. Stitching is nothing special. The rest of it looks like 'off the shelf' material. I'd like to reverse engineer it. Less waste. If the filter was replaced for each patient....would that deal with the 1 mask per patient visit issue. It would be quicker if I sent pics from my phone to your e-mail if that's OK?? I'll backtrack thru the rally info to find it. If you want one, I'll call the outfit, pay for it and have them ship directly to you...mail or courier, whatever you want. Mine has not been worn..It's still in the bag. Quote Link to comment Share on other sites More sharing options...
Darryl&Rita Posted March 27, 2020 Report Share Posted March 27, 2020 The only special property of the marketed N-95 masks, is the testing behind them. An assumption has to be made that the item is, in fact, a legitimate item, and not a cheap clone. Quote I have been wrong before, I'll probably be wrong again. 2000 Kenworth T 2000 w/N-14 and 10 speed Gen1 Autoshift, deck built by Star Fabrication 2006 smart fourtwo cdi cabriolet 2007 32.5' Fleetwood QuantumPlease e-mail us here. Link to comment Share on other sites More sharing options...
rdickinson Posted March 27, 2020 Report Share Posted March 27, 2020 You may want to read up on these. They exceed the specs required. You wear the 95, I'll use this one as will my brother at the hospital. A good deal of the problem with the 95's is they are not worn properly. 75$ cn is not a cheap clone. Wildland firefighters are dying of heart attacks due to build up of carbon in the blood. Pics are on the way to ECRcarl@gmail.com Quote Link to comment Share on other sites More sharing options...
rdickinson Posted March 27, 2020 Report Share Posted March 27, 2020 1 hour ago, SuiteSuccess said: Could you post a picture? The problem with what you describe is the filter. Covid-19 is 0.125 micron and a 3 micron filter is not going to be helpful. One of my original thoughts was taking the paper out of a 5 micron oil filter and sewing in between layers of cloth until I found the size of the virus. Trouble is the smaller the pore size of the filter, the harder it would be to pull air through it with a breath and the harder to expel CO2 through it. That got me to thinking about a positive pressure air source to push air through the filter. Also the cure shouldn’t be worse than the disease so oil filter paper may be chemically laced which could cause harm. Air purifier HEPA filters should be safe to incorporate. Also the positive pressure would tend to push viral particles away from the edge of the mask enhancing safety. As a retired medical professional, I often times wore an N95 mask for hours on end when HIV/AIDs first hit and we had no clue of it’s transmission. It is exhausting just trying to breath through one of those for hours. Positive pressure could work to a point, however too much pressure and it would come out thru the path of least resistance. One being the top of the mask which could blow dust into the wearers eyes or if the air was high in humidity, fog up glasses. There are other N 95 type filters that have vents either at the very front or off to the side. I don't know if they are a 1 way valve like a chest seal or not but I was told that with normal use the vented ones were not as effective as non vented. Paint shops use a positive pressure helmet type device. Air comes thru a hose, probably going thru a dryer and filter. I'm sure that could be located on the Web. Maybe hook it up to the hospital o2 supply at something less than 15 lpm. Quick release air fitting. Quote Link to comment Share on other sites More sharing options...
Steve from SoCal Posted March 27, 2020 Report Share Posted March 27, 2020 I use a 3M 6800 full face respirator with supplied air, a full face is the best protection. They seem to be out of stock as well. You can use a battery cpap with a hepa filter as the supplied air. Quote 2005 Peterbilt 387-112 Baby Cat 9 speed U-shift 1996/2016 remod Teton Royal Atlanta 1996 Kentucky 48 single drop stacker garage project Pulls like a train, sounds like a plane....faster than a Cheetah sniffin cocaine. Link to comment Share on other sites More sharing options...
rickeieio Posted March 27, 2020 Report Share Posted March 27, 2020 I've been google-ing "furnace filter hepa 1 micron" with no success. My thought was to fashion a simple shell or use a de-constructed motorcycle helmet, along with filter sheet to make a "box". More surface area= easier breathing. Some duct tape may be required. Quote KW T-680, POPEMOBILE Newmar X-Aire, VATICAN Lots of old motorcycles, Moto Guzzi Griso and Spyder F3 currently in the front row Young enough to play in the dirt as a retired farmer. contact me at rickeieio1@comcast.net Link to comment Share on other sites More sharing options...
Darryl&Rita Posted March 27, 2020 Report Share Posted March 27, 2020 33 minutes ago, rdickinson said: 75$ cn is not a cheap clone. That's how clones work, charge what seems like a reasonable price. If they were pennies on the dollar, everyone would suspect them. Charge double the regular price, everyone assumes price gouging. It's not hard to build a reasonable facsimile of the true mask, the devil is in the provenance. Or not, depending on how much effort the faker wants to put in. Quote I have been wrong before, I'll probably be wrong again. 2000 Kenworth T 2000 w/N-14 and 10 speed Gen1 Autoshift, deck built by Star Fabrication 2006 smart fourtwo cdi cabriolet 2007 32.5' Fleetwood QuantumPlease e-mail us here. Link to comment Share on other sites More sharing options...
rdickinson Posted March 27, 2020 Report Share Posted March 27, 2020 Then build one. I'm not going to argue about it. The data can speak for itself, familiarize yourself with it. Here is a link to a Lee Valley Tools hepa filter. The specs are still only.3 micron. We need to get it to .1 or less, or fewer. https://www.leevalley.com/en-ca/shop/tools/workshop/dust-collection/filters/64681-hepa-filters Quote Link to comment Share on other sites More sharing options...
GeorgiaHybrid Posted March 27, 2020 Report Share Posted March 27, 2020 I just happen to have a 3M full face with two twist-off filters (one on each side) downstairs with spare filters and some 3M brand N95 masks in the garage. Now you have me wondering about that big O2 tank in the garage. Not medical grade O2 but probably better than the alternative of not being able to breath if it completely hits the fan. Might not live that long though. I think Vicki was loading one of my pistols earlier today and chuckling while looking my way.... This is one time that I keep coming back to one passage I actually like from the Koran. "Let there be spaces in your togetherness " Quote 2017 Kenworth T6802015 DRV 38RSSA Elite Suites2016 Smart Prime Link to comment Share on other sites More sharing options...
rdickinson Posted March 27, 2020 Report Share Posted March 27, 2020 There may be an oiler in the system for air tools. BTW, on my shop compressor we punched a hole thru the block wall and put the air intake outside. It made a difference in the noise level in the shop. Stay away from people, have the groceries delivered by the food market if that service is offered. Costs me 15 bucks a trip, order online or I go b/w 7 and 8 am like I said earlier. Costco is a good place to go for gas, their personnel wipe each pump each time it's used. That r go to a full service station where the employee pumps the fuel. I pack med gloves and hand sanitizer wherever I go. Full or half mask? Quote Link to comment Share on other sites More sharing options...
2Auberts Posted March 27, 2020 Report Share Posted March 27, 2020 I still have my MCU2ap gas mask that has a screw on charcoal filter, so if I attach the cone HEPA filter from the wife’s Dyson V8 vacuum to the inlet of my gas mask filter, I’m good to go. Bonus is that I have hundreds of hours practice wearing it, minus the additional filter of course. Roy Quote 2017 Volvo 780 2017 DRV Houston Smart searching Link to comment Share on other sites More sharing options...
Imurphy907 Posted March 27, 2020 Report Share Posted March 27, 2020 I have a PAPR for work since I'm a bearded fella. HEPA particle filtration. I have been wearing it more than just in dusty environments. Paired with Tyvek suites and gloves. I'm an essential employee and my wife has COPD and one of my daughters has asthma. Not risking bringing anything home. Been working from home for the most part but still required to do field work. Actually sitting in my truck on a job right now. Quote 2016 Road Warrior 420 2001 Volvo VNL 660 Alaska Based. Link to comment Share on other sites More sharing options...
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